Mounting structure



May 26, 1925. 1,538,994 v C. H. KAMM MOUNTING STRUCTURE Filed Oct. 20, 1923 Patented May 26, 1925.

UNITED STATES 1,538,994 PATENT entice.

CARL H. KAMM, 0 TWO RIVERS, i/U'IS'lUNSIN, ASSIGNOR E0 HAMILTON MANUFAC- TURING COMPANY,. 01? TVJO BIVEES, *JVISGQNSIN, A. CORPORATION OF XVISCONSIN.

MOUNTING STRUCTURE.

Application filed October 20,1923.

To all whom it may concern.-

lie it known that I, CARL H. ILlhfivi, a citizcnof the United States, residing at- Two Rivers, in the county of Manitowoc and State of llisconsin, have invented a certain new and us ul Improvement in Mounting Structures, or which the following is full, clear, concise, and exact description. v

llvly invention relates to mounting structures and is of particular utility when employed for positioning or carrying a slide rule. The mounting may be of such a na ture that the rule may be maintained in a position to be always n'operiy observable whether in use or at rest, the mounting also enabling the rule to be adjusted by one hand.

in the preferred embodiment of the invention the mounting structure includes an elongated block having an angular recess formed in and extending along one long side thereof, and a second angular recess formed in and extending along an adjacent long side of this block, the bases of these recesses being in angular relation and having a common dividing edge extending along the block, and a second elongated block in hinged connection with the first and received in the first recess of the first block and itself having an angular recess formed in and extending along one of its long sides.

The means by which the two blocks are placed in hinged connection desirably rcsides in a coiled spring structure anchored to the two blocks and extending across the base of the first recess in the first block.

The invention will be more fully ex:- plained by reference to the accompanying drawing in which Fig. 1 is a perspective view illustrating the preferred form of mounting and a slide rule carried thereby; Fig. 2 is a perspective view illustrating the two blocks spread apart to enable the slide rule to be readily received, the slide rule not being shown in this figure; Fig. 8 is a sectional view on line 33 of Fig. 1; Fig. 4 is a bottom view, on a smaller scale; and Fig. 5 is a sectional view on line 5-5 of Fig. 3.

Like parts are indicated by similar characters of reference throughout the different figures.

The mounting structure includes an elongated base block 1, having an angular recess 9 formed in and extending along the top long side thereof. The second angular bases 4 and 5 of angular relation, the recess base 5 being in Serial Ito. 669,857.

recess 8 is formed in and extends along an adjacent long side of this block, this side of the block being inclined rearwardly. The the recesses 2 and 3 are in clined similarly to the inclined side of the 7 block The two recess bases have a common dividing edge 6 extending along the block.

.A second elongated block 7 is received in the first recess 2 of the block 1 and itself has, -an angular recess 8 formed in and extending along one of its long sides. The base 9 of the recess 8 is normally substan tially in the plane of the base 5 of the cond angular recess 3 in the first block whereby the angular recess 8 in the second block constitutes a widening continuation ofthe sec ond angular recess 3 in the first block.

The wall of one of the two recesses 3, 8, (preferably the recess 8) that is angular to the base of this recess overhangs this recess base. i

T he means by which the two blocks are 2 sembled in hinged relation desirably includes two coiled springs 10 and 11 each anchored to the two blocks and extending across the base of the first recess 2 in the first block 1. The springs are partly received in the holes 12 in the block 1, and partly in the holes 13 in the block 7, the hole receiving each spring being aligned when the secont block is held against the first by the springs. The lower end of each spring is anchored to the block 1 by means of an anchor pin 'l-t held in the slot 15 formed in the bottom of the block 1 and crossing the corres'ponding hole 12. The other end of the said spring is anchored to the block 7 by means of a pin or nail 16 driven into the block 7 and passing through the hole 13. The springs serve to permit the second block to be shifted upon the first, as illustrated in Fig. 2, to temporarily widen the space jointly formed by the recesses 3 and 8 readily to permit an object to be inserted into this soace', where after the blocks maybe restored to their normal relation to hold the object in place.

The object illustrated upon the mounting structure is a slide rule whose base member 17 is confined between the recess sides 18 and 19, the latter recess side overhanging the adjacent recess base 9 and sloping to receive the upper sloping side 20 of the base member of the slide rule.

Friction pads,preferably in the form of rings of rubber 21, are received in the bot tom of the block 1 and projectdownwardly therefrom a slight distance whereby the mounting structure may not readily slip upon the drawing board or other support. The base member of the slide rule is so firmly held that the adjustable member '22 thereof may readily be moved with respect to the base member without shifting this base member, it being not necessary to hold this 'base n'ieinber nor the mounting for the rule when adjusting the rule, owing to the weight of this mounting and the frictional en a ement thereof with the su 3 aort for the mounting that is afforded by the friction pads. A little practice will readily enable the user further to hold the mounting in place by one or more fingers while the thumb and another finger or fingers are employed in shifting the adjustable member 22' of the slide rule or the transparent sliding member 23 of the rule.

It is obvious that changes may be made without departing from the spirit of my invention.

Having thus described my invention I claim as new and desire to secure by Letters Patent the following z A mounting structure including an elongated block having an angular recess formed in and extending along one long side thereof, a second angular recess formed in and extending along "an adjacent long side of this block, the bases of these recesses being in angular relation and having a common dividing edge extending along the block; a second elongated block received in the first recess of the first block and itself having an angular recess formed in and extending along one of its long sides and whose base is substantially in the plane of the base of the second angular recess in the first block whereby the angular recess in the second block constitutes a widening continuation of the second angular recess in the first block, the wall of the recess in the second block thatis angular to the base of this recess'overhanging this recess base; the base of the second recess of the first block vand the base of the recess in the second block sloping backwardly and acoiled spring structure anchored to the two blocks and extending across the base of the first recess in the first block.

In witness whereof, I hereunto subscribe my name this 8th day of October A. 1)., 1923.

CARL H. KAMM. 

